doc/salome/gui/GEOM/measurement_tools.htm

   1 <!doctype HTML public "-//W3C//DTD HTML 4.0 Frameset//EN">\r
   2 \r
   3 <html>\r
   4 \r
   5 <head>\r
   6 <title>Measurement Tools</title>\r
   7 <meta http-equiv="content-type" content="text/html; charset=windows-1252">\r
   8 <meta name="generator" content="RoboHelp by eHelp Corporation www.ehelp.com">\r
   9 <link rel="stylesheet" href="default_ns.css"><script type="text/javascript" language="JavaScript" title="WebHelpSplitCss">\r
  10 <!--\r
  11 if (navigator.appName !="Netscape")\r
  12 {   document.write("<link rel='stylesheet' href='default.css'>");}\r
  13 //-->\r
  14 </script>\r
  15 <style type="text/css">\r
  16 <!--\r
  17 p.whs1 { font-family:'Lucida Console' , monospace; }\r
  18 p.whs2 { font-family:'Times New Roman' , serif; }\r
  19 -->\r
  20 </style><script type="text/javascript" language="JavaScript" title="WebHelpInlineScript">\r
  21 <!--\r
  22 function reDo() {\r
  23   if (innerWidth != origWidth || innerHeight != origHeight)\r
  24      location.reload();\r
  25 }\r
  26 if ((parseInt(navigator.appVersion) == 4) && (navigator.appName == "Netscape")) {\r
  27         origWidth = innerWidth;\r
  28         origHeight = innerHeight;\r
  29         onresize = reDo;\r
  30 }\r
  31 onerror = null; \r
  32 //-->\r
  33 </script>\r
  34 <style type="text/css">\r
  35 <!--\r
  36 div.WebHelpPopupMenu { position:absolute; left:0px; top:0px; z-index:4; visibility:hidden; }\r
  37 p.WebHelpNavBar { text-align:right; }\r
  38 -->\r
  39 </style><script type="text/javascript" language="javascript1.2" src="whmsg.js"></script>\r
  40 <script type="text/javascript" language="javascript" src="whver.js"></script>\r
  41 <script type="text/javascript" language="javascript1.2" src="whproxy.js"></script>\r
  42 <script type="text/javascript" language="javascript1.2" src="whutils.js"></script>\r
  43 <script type="text/javascript" language="javascript1.2" src="whtopic.js"></script>\r
  44 <script type="text/javascript" language="javascript1.2">\r
  45 <!--\r
  46 if (window.gbWhTopic)\r
  47 {\r
  48         if (window.setRelStartPage)\r
  49         {\r
  50         addTocInfo("Geometry module\nTUI Scripts\nMeasurement Tools");\r
  51 addButton("show",BTN_IMG,"Show","","","","",0,0,"whd_show0.gif","whd_show2.gif","whd_show1.gif");\r
  52 addButton("hide",BTN_IMG,"Hide","","","","",0,0,"whd_hide0.gif","whd_hide2.gif","whd_hide1.gif");\r
  53 \r
  54         }\r
  55 \r
  56 \r
  57         if (window.setRelStartPage)\r
  58         {\r
  59         setRelStartPage("index.htm");\r
  60 \r
  61                 autoSync(1);\r
  62                 sendSyncInfo();\r
  63                 sendAveInfoOut();\r
  64         }\r
  65 \r
  66 }\r
  67 else\r
  68         if (window.gbIE4)\r
  69                 document.location.reload();\r
  70 //-->\r
  71 </script>\r
  72 </head>\r
  73 <body><script type="text/javascript" language="javascript1.2">\r
  74 <!--\r
  75 if (window.writeIntopicBar)\r
  76         writeIntopicBar(4);\r
  77 //-->\r
  78 </script>\r
  79 <h1>Measurement Tools</h1>\r
  80 \r
  81 <h3>Point Coordinates</h3>\r
  82 \r
  83 <p class="whs1">import math</p>\r
  84 \r
  85 <p class="whs1">import geompy</p>\r
  86 \r
  87 <p class="whs1">&nbsp;</p>\r
  88 \r
  89 <p class="whs2"># create a point</p>\r
  90 \r
  91 <p class="whs1">point = geompy.MakeVertex(15., \r
  92  23., 80.)</p>\r
  93 \r
  94 <p class="whs1">&nbsp;</p>\r
  95 \r
  96 <p class="whs2"># get the coordinates \r
  97  of the point and check its values</p>\r
  98 \r
  99 <p class="whs1">coords = geompy.PointCoordinates(point)</p>\r
 100 \r
 101 <p class="whs1">&nbsp;</p>\r
 102 \r
 103 <p class="whs2"># check the obtained \r
 104  coordinate values </p>\r
 105 \r
 106 <p class="whs1">tolerance = 1.e-07</p>\r
 107 \r
 108 <p class="whs1">def IsEqual(val1, \r
 109  val2): return (math.fabs(val1 - val2) &lt; tolerance)</p>\r
 110 \r
 111 <p class="whs1">&nbsp;</p>\r
 112 \r
 113 <p class="whs1">if IsEqual(coords[0], \r
 114  15.) and IsEqual(coords[1], 23.) and IsEqual(coords[2], 80.):</p>\r
 115 \r
 116 <p class="whs1">&nbsp;&nbsp;&nbsp;&nbsp;print \r
 117  &quot;All values are OK.&quot;</p>\r
 118 \r
 119 <p class="whs1">else :</p>\r
 120 \r
 121 <p class="whs1">&nbsp;&nbsp;&nbsp;&nbsp;print \r
 122  &quot;Coordinates of point must be (15, 23, 80), but returned (&quot;,</p>\r
 123 \r
 124 <p class="whs1">&nbsp;&nbsp;&nbsp;&nbsp;print \r
 125  coords[0], &quot;, &quot;, coords[1], &quot;, &quot;, coords[2], &quot;)&quot;</p>\r
 126 \r
 127 <p><span style="font-family: 'Lucida Console', monospace;">&nbsp;&nbsp;&nbsp;&nbsp;pass</span> \r
 128  </p>\r
 129 \r
 130 <h3>Basic Properties</h3>\r
 131 \r
 132 <p class="whs1">import geompy</p>\r
 133 \r
 134 <p class="whs1">import math</p>\r
 135 \r
 136 <p>&nbsp;</p>\r
 137 \r
 138 <p># create a box</p>\r
 139 \r
 140 <p class="whs1">box = geompy.MakeBoxDXDYDZ(100,30,100)</p>\r
 141 \r
 142 <p class="whs1">props = geompy.BasicProperties(box)</p>\r
 143 \r
 144 <p class="whs1">print &quot;\nBox \r
 145  100x30x100 Basic Properties:&quot;</p>\r
 146 \r
 147 <p class="whs1">print &quot; Wires \r
 148  length: &quot;, props[0]</p>\r
 149 \r
 150 <p class="whs1">print &quot; Surface \r
 151  area: &quot;, props[1]</p>\r
 152 \r
 153 <p class="whs1">print &quot; Volume \r
 154  &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;: \r
 155  &quot;, props[2]</p>\r
 156 \r
 157 <p class="whs1">length = math.sqrt((props[0] \r
 158  - 1840)*(props[0] - 1840))</p>\r
 159 \r
 160 <p class="whs1">area = math.sqrt((props[1] \r
 161  - 32000)*(props[1] - 32000))</p>\r
 162 \r
 163 <p class="whs1">volume = math.sqrt((props[2] \r
 164  - 300000)*(props[2] - 300000))</p>\r
 165 \r
 166 <p class="whs1">if length &gt; 1e-7 \r
 167  or area &gt; 1e-7 or volume &gt; 1e-7:</p>\r
 168 \r
 169 <p class="whs1">&nbsp;&nbsp;&nbsp;&nbsp;print \r
 170  &quot;While must be:&quot;</p>\r
 171 \r
 172 <p class="whs1">&nbsp;&nbsp;&nbsp;&nbsp;print \r
 173  &quot; Wires length: &quot;, 1840</p>\r
 174 \r
 175 <p class="whs1">&nbsp;&nbsp;&nbsp;&nbsp;print \r
 176  &quot; Surface area: &quot;, 32000</p>\r
 177 \r
 178 <p class="whs1">&nbsp;&nbsp;&nbsp;&nbsp;print \r
 179  &quot; Volume &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;: \r
 180  &quot;, 300000.</p>\r
 181 \r
 182 <h3>Center of masses</h3>\r
 183 \r
 184 <p class="whs1">import geompy</p>\r
 185 \r
 186 <p class="whs1">import math</p>\r
 187 \r
 188 <p class="whs1">&nbsp;</p>\r
 189 \r
 190 <p class="whs2"># create a box</p>\r
 191 \r
 192 <p class="whs1">box = geompy.MakeBoxDXDYDZ(100,30,100)</p>\r
 193 \r
 194 <p class="whs1">cm = geompy.MakeCDG(box)</p>\r
 195 \r
 196 <p class="whs1">if cm is None:</p>\r
 197 \r
 198 <p class="whs1">&nbsp;&nbsp;&nbsp;&nbsp;raise \r
 199  RuntimeError, &quot;MakeCDG(box) failed&quot;</p>\r
 200 \r
 201 <p class="whs1">else:</p>\r
 202 \r
 203 <p class="whs1">&nbsp;&nbsp;&nbsp;&nbsp;print \r
 204  &quot;\nCentre of gravity of box has been successfully obtained:&quot;</p>\r
 205 \r
 206 <p class="whs1">&nbsp;&nbsp;&nbsp;&nbsp;coords \r
 207  = geompy.PointCoordinates(cm)</p>\r
 208 \r
 209 <p class="whs1">&nbsp;&nbsp;&nbsp;&nbsp;print \r
 210  &quot;(&quot;, coords[0], &quot;, &quot;, coords[1], &quot;, &quot;, coords[2], \r
 211  &quot;)&quot;</p>\r
 212 \r
 213 <p class="whs1">&nbsp;&nbsp;&nbsp;&nbsp;dx \r
 214  = math.sqrt((coords[0] - 50)*(coords[0] - 50))</p>\r
 215 \r
 216 <p class="whs1">&nbsp;&nbsp;&nbsp;&nbsp;dy \r
 217  = math.sqrt((coords[1] - 15)*(coords[1] - 15))</p>\r
 218 \r
 219 <p class="whs1">&nbsp;&nbsp;&nbsp;&nbsp;dz \r
 220  = math.sqrt((coords[2] - 50)*(coords[2] - 50))</p>\r
 221 \r
 222 <p class="whs1">&nbsp;&nbsp;&nbsp;&nbsp;if \r
 223  dx &gt; 1e-7 or dy &gt; 1e-7 or dz &gt; 1e-7:</p>\r
 224 \r
 225 <p class="whs1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;print \r
 226  &quot;But must be (50, 15, 50)&quot; </p>\r
 227 \r
 228 <h3>Inertia</h3>\r
 229 \r
 230 <p class="whs1">import geompy</p>\r
 231 \r
 232 <p class="whs1">import math</p>\r
 233 \r
 234 <p class="whs1">&nbsp;</p>\r
 235 \r
 236 <p class="whs2"># create a box</p>\r
 237 \r
 238 <p class="whs1">box = geompy.MakeBoxDXDYDZ(100,30,100)</p>\r
 239 \r
 240 <p class="whs1">In = geompy.Inertia(box)</p>\r
 241 \r
 242 <p class="whs1">print &quot;\nInertia \r
 243  matrix of box 100x30x100:&quot;</p>\r
 244 \r
 245 <p class="whs1">print &quot; (&quot;, \r
 246  In[0], &quot;, &quot;, In[1], &quot;, &quot;, In[2], &quot;)&quot;</p>\r
 247 \r
 248 <p class="whs1">print &quot; (&quot;, \r
 249  In[3], &quot;, &quot;, In[4], &quot;, &quot;, In[5], &quot;)&quot;</p>\r
 250 \r
 251 <p class="whs1">print &quot; (&quot;, \r
 252  In[6], &quot;, &quot;, In[7], &quot;, &quot;, In[8], &quot;)&quot;</p>\r
 253 \r
 254 <p class="whs1">print &quot;Main moments \r
 255  of inertia of box 100x30x100:&quot;</p>\r
 256 \r
 257 <p class="whs1">print &quot; Ix = \r
 258  &quot;, In[9], &quot;, Iy = &quot;, In[10], &quot;, Iz = &quot;, In[11] \r
 259  </p>\r
 260 \r
 261 <p class="whs1">&nbsp;</p>\r
 262 \r
 263 <h3>Bounding Box</h3>\r
 264 \r
 265 <p class="whs1">import geompy</p>\r
 266 \r
 267 <p class="whs1">&nbsp;</p>\r
 268 \r
 269 <p class="whs2"># create a box</p>\r
 270 \r
 271 <p class="whs1">box = geompy.MakeBoxDXDYDZ(100,30,100)</p>\r
 272 \r
 273 <p class="whs1">bb = geompy.BoundingBox(box)</p>\r
 274 \r
 275 <p class="whs1">print &quot;\nBounding \r
 276  Box of box 100x30x100:&quot;</p>\r
 277 \r
 278 <p class="whs1">print &quot; Xmin \r
 279  = &quot;, bb[0], &quot;, Xmax = &quot;, bb[1]</p>\r
 280 \r
 281 <p class="whs1">print &quot; Ymin \r
 282  = &quot;, bb[2], &quot;, Ymax = &quot;, bb[3]</p>\r
 283 \r
 284 <p class="whs1">print &quot; Zmin \r
 285  = &quot;, bb[4], &quot;, Zmax = &quot;, bb[5] </p>\r
 286 \r
 287 <p class="whs1">&nbsp;</p>\r
 288 \r
 289 <p class="whs1">&nbsp;</p>\r
 290 \r
 291 <h3>Minimal Distance </h3>\r
 292 \r
 293 <p class="whs1"><span style="font-family: 'Lucida Console', monospace;">import \r
 294  geompy</span></p>\r
 295 \r
 296 <p class="whs1">&nbsp;</p>\r
 297 \r
 298 <p class="whs2"># create boxes</p>\r
 299 \r
 300 <p class="whs1">box1 = geompy.MakeBoxDXDYDZ(100,30,100)</p>\r
 301 \r
 302 <p class="whs1">box2 = geompy.MakeBox(105,0,0,200,30,100)</p>\r
 303 \r
 304 <p class="whs1">min_dist = geompy.MinDistance(box1,box2)</p>\r
 305 \r
 306 <p class="whs1">print &quot;\nMinimal \r
 307  distance between box1 and box2 = &quot;, min_dist </p>\r
 308 \r
 309 <p class="whs1">&nbsp;</p>\r
 310 \r
 311 <h3>Tolerance</h3>\r
 312 \r
 313 <p class="whs1"><span style="font-family: 'Lucida Console', monospace;">import \r
 314  geompy</span></p>\r
 315 \r
 316 <p class="whs1">&nbsp;</p>\r
 317 \r
 318 <p class="whs2"># create a box</p>\r
 319 \r
 320 <p class="whs1">box = geompy.MakeBoxDXDYDZ(100,30,100)</p>\r
 321 \r
 322 <p class="whs1">Toler = geompy.Tolerance(box)</p>\r
 323 \r
 324 <p class="whs1">print &quot;\nBox \r
 325  100x30x100 tolerance:&quot;</p>\r
 326 \r
 327 <p class="whs1">print &quot; Face \r
 328  min. tolerance: &quot;, Toler[0]</p>\r
 329 \r
 330 <p class="whs1">print &quot; Face \r
 331  max. tolerance: &quot;, Toler[1]</p>\r
 332 \r
 333 <p class="whs1">print &quot; Edge \r
 334  min. tolerance: &quot;, Toler[2]</p>\r
 335 \r
 336 <p class="whs1">print &quot; Edge \r
 337  max. tolerance: &quot;, Toler[3]</p>\r
 338 \r
 339 <p class="whs1">print &quot; Vertex \r
 340  min. tolerance: &quot;, Toler[4]</p>\r
 341 \r
 342 <p class="whs1">print &quot; Vertex \r
 343  max. tolerance: &quot;, Toler[5] </p>\r
 344 \r
 345 <p class="whs1">&nbsp;</p>\r
 346 \r
 347 <h3>What Is</h3>\r
 348 \r
 349 <p class="whs1"><span style="font-family: 'Lucida Console', monospace;">import \r
 350  geompy</span></p>\r
 351 \r
 352 <p class="whs1">&nbsp;</p>\r
 353 \r
 354 <p class="whs2"># create a box</p>\r
 355 \r
 356 <p class="whs1">box = geompy.MakeBoxDXDYDZ(100,30,100)</p>\r
 357 \r
 358 <p class="whs1">Descr = geompy.WhatIs(box)</p>\r
 359 \r
 360 <p class="whs1">print &quot;\nBox \r
 361  100x30x100 description:&quot;</p>\r
 362 \r
 363 <p class="whs1">print Descr </p>\r
 364 \r
 365 <p class="whs1">&nbsp;</p>\r
 366 \r
 367 <h3>Check Shape</h3>\r
 368 \r
 369 <p class="whs1">import geompy</p>\r
 370 \r
 371 <p class="whs1">&nbsp;</p>\r
 372 \r
 373 <p class="whs2"># create a box</p>\r
 374 \r
 375 <p class="whs1">box = geompy.MakeBoxDXDYDZ(100,30,100)</p>\r
 376 \r
 377 <p class="whs1">IsValid = geompy.CheckShape(box)</p>\r
 378 \r
 379 <p class="whs1">if IsValid == 0:</p>\r
 380 \r
 381 <p class="whs1">&nbsp;&nbsp;&nbsp;&nbsp;raise \r
 382  RuntimeError, &quot;Invalid box created&quot;</p>\r
 383 \r
 384 <p class="whs1">else:</p>\r
 385 \r
 386 <p class="whs1">&nbsp;&nbsp;&nbsp;&nbsp;print \r
 387  &quot;\nBox is valid&quot; </p>\r
 388 \r
 389 <p class="whs1">&nbsp;</p>\r
 390 \r
 391 <p class="whs1">&nbsp;</p>\r
 392 \r
 393 <h3>Check Compound of Blocks</h3>\r
 394 \r
 395 <p class="whs1"><span style="font-family: 'Lucida Console', monospace;">import \r
 396  geompy</span></p>\r
 397 \r
 398 <p class="whs1">import salome</p>\r
 399 \r
 400 <p class="whs1">gg = salome.ImportComponentGUI(&quot;GEOM&quot;)</p>\r
 401 \r
 402 <p class="whs1">&nbsp;</p>\r
 403 \r
 404 <p class="whs2"># create boxes</p>\r
 405 \r
 406 <p class="whs1">box1 = geompy.MakeBox(0,0,0,100,50,100)</p>\r
 407 \r
 408 <p class="whs1">box2 = geompy.MakeBox(100,0,0,250,50,100)</p>\r
 409 \r
 410 <p class="whs1">&nbsp;</p>\r
 411 \r
 412 <p class="whs2"># make a compound</p>\r
 413 \r
 414 <p class="whs1">compound = geompy.MakeCompound([box1, \r
 415  box2])</p>\r
 416 \r
 417 <p class="whs1">&nbsp;</p>\r
 418 \r
 419 <p class="whs2"># glue the faces of the \r
 420  compound</p>\r
 421 \r
 422 <p class="whs1">tolerance = 1e-5</p>\r
 423 \r
 424 <p class="whs1">glue = geompy.MakeGlueFaces(compound, \r
 425  tolerance)</p>\r
 426 \r
 427 <p class="whs1">IsValid = geompy.CheckCompoundOfBlocks(glue)</p>\r
 428 \r
 429 <p class="whs1">if IsValid == 0:</p>\r
 430 \r
 431 <p class="whs1">&nbsp;&nbsp;&nbsp;&nbsp;raise \r
 432  RuntimeError, &quot;Invalid compound created&quot;</p>\r
 433 \r
 434 <p class="whs1">else:</p>\r
 435 \r
 436 <p class="whs1">&nbsp;&nbsp;&nbsp;&nbsp;print \r
 437  &quot;\nCompound is valid&quot; </p>\r
 438 \r
 439 <p class="whs1">&nbsp;</p>\r
 440 \r
 441 <p class="whs1">&nbsp;</p>\r
 442 \r
 443 <p class="whs1">&nbsp;</p>\r
 444 \r
 445 <script type="text/javascript" language="javascript1.2">\r
 446 <!--\r
 447 if (window.writeIntopicBar)\r
 448         writeIntopicBar(0);\r
 449 //-->\r
 450 </script>\r
 451 </body>\r
 452 </html>\r